I recently diagnosed the most basic of design failures in Mid Tier 8.1. ehcache, the open source caching tool used to underpin the cache 'framework' uses Java serialisation. If you change the JRE version, it can't unserialise the cache. Instead of dealing with this neatly, Mid Tier threw NullPointerExceptions.
The only solution was to nuke the cache directory - fine, that's a reasonable solution, but it's a basic programming error that should have been neatly handled. _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org "Where the Answers Are, and have been for 20 years"
